Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | // SPDX-License-Identifier: Intel /* * Access to binman information at runtime * * Copyright 2019 Google LLC * Written by Simon Glass <sjg@chromium.org> */ #include <common.h> #include <binman.h> #include <dm.h> #include <log.h> #include <malloc.h> #include <mapmem.h> /** * struct binman_info - Information needed by the binman library * * @image: Node describing the image we are running from * @rom_offset: Offset from an image_pos to the memory-mapped address, or * ROM_OFFSET_NONE if the ROM is not memory-mapped. Can be positive or * negative */ struct binman_info { ofnode image; int rom_offset; }; #define ROM_OFFSET_NONE (-1) static struct binman_info *binman; static int binman_entry_find_internal(ofnode node, const char *name, struct binman_entry *entry) { int ret; if (!ofnode_valid(node)) node = binman->image; node = ofnode_find_subnode(node, name); if (!ofnode_valid(node)) return log_msg_ret("node", -ENOENT); ret = ofnode_read_u32(node, "image-pos", &entry->image_pos); if (ret) return log_msg_ret("image-pos", ret); ret = ofnode_read_u32(node, "size", &entry->size); if (ret) return log_msg_ret("size", ret); return 0; } int binman_entry_find(const char *name, struct binman_entry *entry) { return binman_entry_find_internal(binman->image, name, entry); } int binman_entry_map(ofnode parent, const char *name, void **bufp, int *sizep) { struct binman_entry entry; int ret; if (binman->rom_offset == ROM_OFFSET_NONE) return -EPERM; ret = binman_entry_find_internal(parent, name, &entry); if (ret) return log_msg_ret("entry", ret); if (sizep) *sizep = entry.size; *bufp = map_sysmem(entry.image_pos + binman->rom_offset, entry.size); return 0; } ofnode binman_section_find_node(const char *name) { return ofnode_find_subnode(binman->image, name); } void binman_set_rom_offset(int rom_offset) { binman->rom_offset = rom_offset; } int binman_get_rom_offset(void) { return binman->rom_offset; } int binman_init(void) { binman = malloc(sizeof(struct binman_info)); if (!binman) return log_msg_ret("space for binman", -ENOMEM); binman->image = ofnode_path("/binman"); if (!ofnode_valid(binman->image)) return log_msg_ret("binman node", -EINVAL); if (ofnode_read_bool(binman->image, "multiple-images")) { ofnode node = ofnode_first_subnode(binman->image); if (!ofnode_valid(node)) return log_msg_ret("first image", -ENOENT); binman->image = node; } binman_set_rom_offset(ROM_OFFSET_NONE); return 0; } |